I ordered a set of night sites for my FNP from Top Gun Supply, right after their availability was posted on this forum.
I received my shipping notification email less than an hour after submitting the order on the Top Gun site! The order arrived 3 days later with a hand written thank you and a sample tube of Mil-Comm lube stapled to the packing slip. I couldn't be happier.
I do a LOT of shopping on line, ordering computer or camera stuff several times a month... Top Gun has got to be the most responsive e-tailer I've ever had the pleasure of doing business with.